Dan Albert ca27dd0a23 Fix the PrefixExecutor.
The PrefixExecutor wasn't passing the exe_path down the chain, so the
command was overriding that, the work_dir was being passed as the
command, and so on.

I've cleaned up a few pylint issues while I was here.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@231496 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-06 18:35:45 +00:00
..
2015-03-06 18:35:45 +00:00